(And then there's Babs. But then, she's Babs. And actually she was still straddling the middle between losing-end and on-top at the time.)
There's something about Oracle that straddles that all the time anyway, really. Not just because of the cliche "she's in a wheelchair and therefore the underdog" thing, but she's a character who went through her own personal NML and reinvented herself once. She knows about survival at the most primal level as much as Cass that way, so could have easily created Oracle for a situation like this, if that makes sense.
It is kind of fascinating to think of what characters have even had that experience. The Batboys (except Jason) have more dealt with emotional shattering rather than a real physical loss. Even with something like Bruce's back being broken. He was injured and was fighting his way back to health, not really struggling for survival. Most of the others the same way.